Empty boxes are filled with cards of a higher rank. This means that they are reserved exclusively for aces. But as long as at least one inhabitant of the top "box" appears, a series of manipulations must be carried out to open a card from the working area. If it's opened from the deck, it can be placed in a legal position without delay. At the bottom, it's easy to make a sequence of combinations, regardless of the cards. For example, a two of black hearts will be placed on top of a three of diamonds and will remain in that position until it's time to break that logical sequence. The deck will be viewed twice, and a second click will put the object in place.
